Oil burner



March 16,1926. 1576,86]

L. P. SMITH OIL BURNER Filed July '7, 1925 2 Sheets-Sheet 1 March 16 1926.

L. P. SMITH OIL BURNER Filed July 7 1925 2 Sheets-Sheet 2 Patented Mar. 16, 1926.

UNITED STATES LEWIS P. SMITH, OF FULTON, NEW YORK.

OIL BURNER.

Application filed July 7, 1925.

To all whom it may concern:

Be it known that I, LEWIS P. SMITH, a citizen of the. United States, residing at Fulton, in the county of Oswego and State of New York, have invented a new and useful Oil Burner, of which the following is a specification.

This invention relates to oil burners designed primarily for use in connection with heating'furnaces, one of the objects of the invention being to provide a simple and compact structure which does not require the use of a blower and which operates to set up a thorough mixing of the oil and air so as to produce an intense flame.

Another object is to provide a burner of this character which is substantial in construction and has no parts likely to get out of order.

With the foregoing and other objects in view which will appear as the description proceeds, the invention resides in the combination and arrangement of parts and in the details of construction, hereinafter described and claimed, it being understood that changes in the precise embodiment of the invention herein disclosed may be made within the scope of what is claimed without departing from the spirit of the invention.

In the accompanying drawings the preferred form of the invention has been shown.

In said drawings,

Figure 1 is an elevation of the burner, some of the. parts being broken away and a portion of a furnace being indicated by broken lines.

Figure 2 is a plan view of the burner.

'Figure 8 is a vertical section through the burner.

Figure 4 is a section on line l-4; Figure 8.

Figure 5 is a plan view of the spreader.

Referring to the figures by characters of reference 1 designates a generator which is preferably formed of a casting substantially circular in horizontal section but elliptical in vertical section. This generator has an inlet 2 at the center of the top thereof and is provided at the center of the bottom with a depression 8 from which extends a nipple l. This nipple is engaged by a cap 5 having a small orifice 6. baflle plate 7 is suitably supported within the Serial No. 42,035.

generator between let nipple 4;.

Secured to the bottom of the generator are the threaded upper ends 8 of supporting rods 9 and these rods extend through bosses or enlargements formed upon a disk 10 provided with a central frusto-conical extension 11 open from top to bottom and extending close to the plane occupied by the end of the cap 5. Disk 10 is adapted to prevent upflow of draught except through the extension 11 at the center thereof. This disk can be secured adjustably to these supports 9 by means of set screws 12 or the like.

Rods 13 are extended downwardly from the disk 10 and supports a pan 14 having a central outlet 15. Mounted in this pan is a spreader 16 which is concentric with the pan and extends over the outlet 13, the middle portion of the spreader being located close to the disk 10 and directly under the orifice 6. Apertures 17 are provided in the lower portion of the spreader so that unconsumed fuel can flow through these apertures to the outlet 15.

A fuel supply pipe 18 is extended from a suitable source of supply to the inlet 2 and is provided, at any suitable point with a controlling valve 19. Another valve 20 is located in this pipe and is held normally open by a lever 21 having weights 22 normally over-balancing it. A bucket 23 is connected to the other end of the lever and is supported close to and beneath one end of an overflow pipe 24 which extends from the outlet 15. Thus it will be seen that when the valve 19 is open fuel can flow through the pipe 18 to the generator 1. Assuming that this generator has been heated by any suitable means, the fuel delivered into the generator will drop onto the bafile 7 and be spread thereby within .the generator and quickly converted into a vapor or gas. Consequently a pressure willbe set up within the generator and the gaseous fuel will be caused to flow downwardly through the orifice 6 under pressure. The jet of fuel thus delivered through the orifice will pass through the frusto-conical extension 11 of the mixer and will strike the concave top of the spreader 16. Here the fuel will be ignited and the flames will blow upward ly through the extension 11 and around the generator 1, maintaining the temperature the inlet 2 and the out- V of the generator of a high degree. Should any fuel be left unconsumed it will be trapped by the pan 14 and flow through pipe 24 to the bucket 23 and when a predetermined amount of this fuel has accumulated in this bucket, lever 21 will be actuated to close the valve 20 and thereby shut off the supply of fuel. This arrangement prevents the burner from flooding.

When the burner is set up for use the disk 10 can be extended close to the wall of the fire pot so that, as before stated, the up draught Wlll be through the extension 11.

The burner herein described is very simple, compact and durable and by reason of-thc production of pressure within the generator 1 as described, it becomes unnecessary to utilize a blower to effect the proper mixing of oil and air. This mixing is further increased by the downward discharge of the jet of gaseous fuel through the extension 11 while the up draught of ignited air and oil is flowing through the extension.

The burner can be installed readily and, in practice, has been found economical as well as efficient.

In the drawing a portion of a furnace in which the burner has been installed has been indicated by broken lines at F.

For the purpose of preventing air from flowing upwardly between the disk 10 and the wall of the fire pot, a metal plate is positioned under the marginal portion of the disk and extends to the wall of the fire pot, this plate, if desired, being covered with any suitable insulating material such as asbestos. Furthermore a shelf 26 can be supported beneath the pan 14 so that a starting pan, containing burning oil, can be supported thereby when it is desired to start the burner. There is northingnew in the use of an oil pan for starting the vaporizing of fuel in a burner and it is for this reason it is not deemed necessary to describe and illustrate this feature in detail.

hat is claimed is:

1. In an oil burner the combination with a generator having an inlet in the top thereof an outlet in the bottom thereof, said outlet being in the form of a small orifice, of a bai'lie supported within the generator between the inlet and the outlet, a disk supported below the generator and having va I central upwardly projecting extension through which a jet of fuel is to be delivered from the outlet of the generator, a pan below the disk for receiving condensed fuel, a spreader supported within the pan, means for supplying fuel to the top of the generator, and means for conducting overflow fuel from the bottom of the pan.

2. An oil burner including a generator having an inlet in the top thereof and a reduced outlet in the bottom thereof, said outlet being in the form of a nozzle for directing a jet of vaporized oil downwardly, supports for the generator, a baffle within the generator between the inlet and outlet, a disk supported below the generator and a. central upwardly projecting extension on the disk open from top to bottom for receiving the fuel from the outlet of the generator and for directing a draught upwardly towards the generator.

3. An oil burner including a. generator having an inlet in the top thereof and areduced outlet in the bottom thereof, said outlet being in the form of a nozzle for directing a jet of vaporized oil downwardly, supports for the generator, a baffle within the generator between the inlet and outlet, a disk supported below the generator, a central upwardly projecting extension on the disk open from top to bottom for receiving the fuel from the outlet of the generator and for directing a draught upwardly towards the generator, a pan supported below the disk, 21. spreader upon the pan, means for directing fuel to the inlet of the generator, and means for conducting overflow fuel from the pan.

4. The combination with a generator having an inlet in the top thereof and an. outlet in the bottom thereof, of a baflle interposed between the inlet and the outlet, said outlet constituting means for directing a jet of gaseous fuel downwardly, a disk supported below the generator and having a central upwardly projecting extension open from top to bottom for directing a. draught upwardly against the generator and for receiving the jet of fuel from the genera-tor, a pan supported below the disk, a spreader carried by the pan and below the extension, means for directing fuel to the top of the generator, means for conducting overflow fuel from the pan, and means operated'by overflow fuel for shutting off the supply of fuel to the generator.

In testimony that I claim the foregoing as my own, I have hereto aflixed my signature.

LEWIS P. SMITH. 

